Lambda baryon

Lambda baryon
Quark structure of the lambda baryon.
Composition

  • Λ0
    :
    u

    d

    s

  • Λ+
    c    :
    u

    d

    c

  • Λ0
    b    :
    u

    d

    b
StatisticsFermionic
FamilyBaryons
InteractionsStrong, weak, electromagnetic, and gravity
Types3
Mass

  • Λ0
    : 1115.683±0.006 MeV/c2[1]

  • Λ+
    c    : 2286.46±0.14 MeV/c2

  • Λ0
    b    : 5619.60±0.17 MeV/c2
Spin1⁄2
Isospin0

The lambda baryons (Λ) are a family of subatomic hadron particles containing one up quark, one down quark, and a third quark from a higher flavour generation, in a combination where the quantum wave function changes sign upon the flavour of any two quarks being swapped (thus slightly different from a neutral sigma baryon,
Σ0
). They are thus baryons, with total isospin of 0, and have either neutral electric charge or the elementary charge +1.

  1. ^ Zyla, P. A.; et al. (Particle Data Group) (2020). "Review of Particle Physics". Progress of Theoretical and Experimental Physics. 2020 (8): 083C01. Bibcode:2020PTEP.2020h3C01P. doi:10.1093/ptep/ptaa104. hdl:11585/772320.